JP6973329B2 - Vehicle front body structure - Google Patents

Description

The present invention relates to, for example, a front vehicle body structure of a vehicle in which an annular vehicle body skeleton that is substantially annular in the vehicle width direction is formed in the front vehicle body in a front view.

For vehicles such as automobiles, for example, a front suspension damper that suppresses the vertical movement of the vehicle body by expanding and contracting according to the unevenness of the road surface to ensure a comfortable ride for the occupants (hereinafter referred to as "front suspension damper"). Is connected to the skeleton member of the vehicle body via the suspension housing.

Generally, a relatively large load is likely to be applied to the suspension housing via the front suspension damper, so if the front vehicle body bends and deforms due to the load acting through the front suspension damper, the maneuverability will deteriorate. , There was a risk of causing a decrease in ride comfort given to the occupants.

Therefore, for example, in Patent Document 1, a pair of left and right damper housing reinforcing members forming a closed cross section extending in the vertical direction of the vehicle with a suspension housing (damper housing) arranged close to the dash panel, and left and right front pillars. The dash upper panel reinforcement member, which has a closed cross section extending in the vehicle width direction with the cowl box (dash upper panel) connecting the lower ends, and the front subframe arranged under the vehicle of the suspension housing, are in front of the suspension housing. An annular body frame, which is a substantially annular shape, is constructed to improve the rigidity in the vicinity of the suspension housing.

According to such a configuration, not only the rigidity of the vehicle body with respect to the load acting on the suspension housing can be improved, but also the load applied to the subframe via the suspension arm can be distributed and transmitted to the vehicle body via the cowl box. Therefore, in Patent Document 1, the vibration transmitted to the suspension housing and the subframe can be distributed and transmitted to the vehicle body.

By the way, when the dash panel and the suspension housing are close to each other in the front-rear direction of the vehicle, a cowl box is used as a closed cross-sectional member connecting the left and right suspension housings as in Patent Document 1, and the front view is substantially annular. The body frame can be constructed.

However, when the suspension housing is separated from the dash panel in front of the vehicle, it is difficult to use the cowl box as a closed cross-section member connecting the left and right suspension housings, so that the load acting on the suspension housing and the subframe are affected. There was a risk that the vehicle body skeleton that could improve the vehicle body rigidity against the load to be applied could not be constructed.

Japanese Unexamined Patent Publication No. 2017-7606

In view of the above problems, the present invention relates to a load acting on the suspension housing and a load acting on the subframe even when the suspension housing is arranged at a position separated from the dash panel in front of the vehicle. It is an object of the present invention to provide a front body structure of a vehicle capable of improving the body rigidity.

The present invention includes a pair of left and right hinge pillars arranged at positions spaced apart from each other in the vehicle width direction of the vehicle, and a pair of left and right apron reinforcements which are closed cross-section members extending from the upper portion of the hinge pillars in the vehicle front-rear direction. Supports a pair of left and right front side frames, which are closed cross-section members extending in the front-rear direction of the vehicle below the apron reinforcement, and the upper end of the front suspension damper at a desired position in front of the vehicle at a predetermined distance from the dash panel. Along with the apron reinforcement, a pair of left and right suspension housings erected across the front side frame, and a sub that is arranged under the vehicle of the front side frame and swingably supports the suspension arm. A shroud upper, which is a front body structure of a vehicle provided with a frame and is a closed cross-sectional member connecting the front ends of the apron reinforcement in the vehicle width direction, the shroud upper, and the front end of the front side frame. A pair of left and right shroud members that are connected closed cross-section members are provided, and the subframe has a pair of left and right side members extending in the front-rear direction of the vehicle and the left and right sides at substantially the same position in the front-rear direction of the vehicle as the shroud member. It includes a first suspension cross member that is a closed cross-section member that connects the members, and a second suspension cross member that is a closed cross-section member that connects the left and right side members at substantially the same position in the vehicle front-rear direction as the suspension housing. Through the shroud member, the first suspension cross member which is substantially annular in front view through the first suspension cross member of the subframe, the vicinity of the suspension housing, and the second suspension cross member of the subframe. The second annular vehicle body skeleton that is substantially annular in front view and the third annular vehicle body skeleton that is substantially annular in front view through the hinge pillar are provided, and the first annular vehicle body skeleton, the second annular vehicle body skeleton, and the said The third annular vehicle body skeleton is characterized in that the apron reinforcement, the front side frame, and the side member of the subframe are connected in the front-rear direction of the vehicle.

INDUSTRIAL APPLICABILITY According to the present invention, even when the suspension housing is arranged at a position separated from the dash panel in front of the vehicle, the vehicle body rigidity with respect to the load acting on the suspension housing and the load acting on the subframe is improved. Can be done.

Specifically, the first annular body skeleton, the second annular body skeleton, and the third annular body skeleton are connected by the apron reinforcement, the front side frame, and the side members of the subframe, so that the vehicle The front body structure of the above can form a three-dimensional annular body skeleton that is three-dimensionally substantially annular.

As a result, the front body structure of the vehicle can support the left and right suspension housings with a three-dimensionally annular three-dimensional annular body frame, so that the suspension housing is loaded with the vehicle in the vertical direction and the vehicle width direction via the front suspension damper. When a load or a rotational moment is applied, it is possible to suppress the bending deformation that occurs in the front vehicle body.

Therefore, the front body structure of the vehicle can form a body frame having high rigidity against the load in the vehicle vertical direction, the load in the vehicle width direction, and the rotational moment acting on the suspension housing via the front suspension damper. can.

In addition, since the first suspension cross member constitutes the first annular body frame, the second suspension cross member constitutes the second annular body frame, and the side members are connected to the third annular body frame, the vehicle The front body structure can improve the support rigidity of the subframe, and the load applied to the subframe via the suspension arm is applied to the first annular body skeleton, the second annular body skeleton, the third annular body skeleton, and the apron reinforcement. It can be efficiently distributed and transmitted to the suspension and the front side frame.

Therefore, the front body structure of the vehicle with respect to the load acting on the suspension housing and the load acting on the subframe even when the suspension housing is arranged at a position separated from the dash panel in front of the vehicle. The rigidity of the vehicle body can be improved.

As an aspect of the present invention, the second annular vehicle body skeleton may be configured on the vehicle rear side of the suspension housing.
According to the present invention, the front vehicle body structure of the vehicle can be configured such that the second annular vehicle body skeleton is close to the third annular vehicle body skeleton. Therefore, the front vehicle body structure of the vehicle can efficiently transmit the load acting on the second annular vehicle body skeleton to the third annular vehicle body skeleton and the vehicle body behind the third annular vehicle body skeleton. The front body structure of the vehicle stably improves the body rigidity against the load acting on the suspension housing and the load acting on the subframe, as compared with the case where the second annular car body skeleton is configured on the front side of the suspension housing. can do.

Further, as an embodiment of the present invention, the third annular vehicle body skeleton includes a cowl box which is a closed cross-section member connecting the upper portions of the hinge pillars in the vehicle width direction, and the second annular vehicle body skeleton is the vehicle width in the cowl box. A suspension housing connecting member for connecting the left and right suspension housings may be provided via the vicinity of the center of the direction.

According to the present invention, the front body structure of the vehicle can form two planar view triangles along the vehicle width direction by the cowl box, the left and right apron reinforcements, and the suspension housing connecting member. That is, the front body structure of the vehicle is a cowl box, left and right apron reinforcements, and a suspension housing connecting member, and a truss structure can be formed at the rear of the front body.

At this time, since the suspension housing connecting member constituting the second annular vehicle body skeleton is connected to the cowl box constituting the third annular vehicle body skeleton, the front vehicle body structure of the vehicle is the third annular vehicle body skeleton and the second. By cooperating with the annular car body skeleton, the rigidity of the three-dimensional annular car body skeleton that is substantially annular in three dimensions can be more reliably improved.

Further, since the suspension housing connecting member is formed in a wide plan view in the front of the vehicle, the front body structure of the vehicle is connected between the left and right apron reinforcements and the suspension housing in the plan view. A large opening space can be formed in front of the member of the vehicle without impairing the rigidity of the vehicle body as compared with the case where the left and right suspension housings are connected in the vehicle width direction.

Therefore, the front body structure of the vehicle achieves both the securing of the placement space for the engine and the like arranged on the front body and the improvement of the body rigidity against the load acting on the suspension housing and the load acting on the subframe. be able to.

According to the present invention, even when the suspension housing is arranged at a position separated from the dash panel in front of the vehicle, the vehicle body rigidity with respect to the load acting on the suspension housing and the load acting on the subframe can be improved. The front body structure can be provided.

An external perspective view showing the appearance of the front vehicle body in front of the vehicle. A plan view showing the appearance of the front vehicle body in a plan view. Left side view showing the appearance of the front vehicle body from the left side view. FIG. 2 is a cross-sectional view taken along the line AA in FIG. FIG. 2 is a cross-sectional view taken along the line BB in FIG. FIG. 2 is a cross-sectional view taken along the line CC in FIG. An external perspective view showing the appearance of the apron rain lower when viewed from above the front of the vehicle. FIG. 2 is a cross-sectional view taken along the line DD in FIG. External perspective view showing the rear end of the front side frame in the front downward view of the vehicle. External perspective view showing the inside in the vehicle width direction near the front end of the front side frame. External perspective view showing the outside in the vehicle width direction near the front end of the front side frame. Left side view showing the internal configuration near the front end of the front side frame in left side view. Left side view showing the internal configuration of the front side frame in the vicinity of the suspension housing from the left side view. FIG. 3 is a cross-sectional view taken along the line EE in FIG. FIG. 3 is a cross-sectional view taken along the line FF in FIG. External perspective view showing the appearance of the suspension housing on the right side of the vehicle. FIG. 13 is a cross-sectional view taken along the line GG in FIG. An external perspective view showing the appearance of the subframe from the front of the vehicle. Explanatory drawing explaining the 1st annular car body skeleton. Explanatory drawing explaining the 2nd annular car body skeleton. Explanatory drawing explaining the 3rd ring car body skeleton, the 4th ring car body skeleton, and the 5th ring car body skeleton. Explanatory drawing explaining the 6th ring car body skeleton and the 7th ring car body skeleton.

An embodiment of the present invention will be described below with reference to the drawings.
The vehicle 1 in the present embodiment is a vehicle having an annular vehicle body skeleton that is substantially annular in the front vehicle body in front of the vehicle interior where the occupants get on and off. Such a front body structure of the vehicle 1 will be described with reference to FIGS. 1 to 22.

It should be noted that FIG. 1 shows an external perspective view of the front vehicle body in front of the vehicle, FIG. 2 shows a plan view of the front vehicle body, FIG. 3 shows a left side view of the front vehicle body, and FIG. 4 is FIG. A cross-sectional view taken along the line AA in FIG. 5, FIG. 5 shows a cross-sectional view taken along the line BB in FIG. 2, FIG. 6 shows a cross-sectional view taken along the line CC in FIG. 2, and FIG. 7 shows an apron. The external perspective view of the rain lower 822 in the front upward view of the vehicle is shown, FIG. 8 shows a cross-sectional view taken along the line DD in FIG. 2, and FIG. 9 is an external perspective view of the rear end of the front side frame 10 in the front downward view of the vehicle. FIG. 10 shows an external perspective view of the inside in the vehicle width direction in the vicinity of the front end of the front side frame 10.

Further, FIG. 11 shows an external perspective view of the outside in the vehicle width direction in the vicinity of the front end of the front side frame 10, FIG. 12 shows a left side view of the internal configuration in the vicinity of the front end of the front side frame 10, and FIG. 13 shows the suspension housing 12. A left side view of the internal configuration of the front side frame 10 in the vicinity is shown, FIG. 14 shows a cross-sectional view taken along the line EE in FIG. 3, and FIG. 15 shows a cross-sectional view taken along the line EF in FIG. FIG. 16 shows an external perspective view of the suspension housing 12 on the right side of the vehicle.

Furthermore, FIG. 17 shows a cross-sectional view taken along the line GG in FIG. 13, FIG. 18 shows an external perspective view of the subframe 14 when viewed from the front of the vehicle, and FIG. 19 illustrates the first annular vehicle body skeleton W1. An explanatory diagram is shown, FIG. 20 shows an explanatory diagram for explaining the second annular car body skeleton W2, and FIG. 21 shows an explanatory view for explaining the third annular car body skeleton W3, the fourth annular car body skeleton W4, and the fifth annular car body skeleton W5. The figure is shown, and FIG. 22 shows the explanatory view explaining the 6th annular car body skeleton W6 and the 7th annular car body skeleton W7.

Further, in order to clarify the illustration, the lower arm 22 is omitted in FIGS. 3 and 22, the tower bar 13 is omitted in FIGS. 4 and 21, and the apron rain upper 821 is shown in FIG. 7. Is omitted. Further, the side frame outer 102 is omitted in FIGS. 12 and 13, and the front suspension damper 20 is not shown in FIG.

Further, in the figure, the arrows Fr and Rr indicate the front-back direction, the arrow Fr indicates the front direction, and the arrow Rr indicates the rear direction.
Further, the arrows Rh and Lh indicate the width direction, the arrow Rh indicates the right direction, and the arrow Lh indicates the left direction. In addition, the arrow IN indicates the inside in the vehicle width direction, and the arrow OUT indicates the outside in the vehicle width direction.

As shown in FIGS. 1 to 4, the front vehicle body of the vehicle 1 in the present embodiment has a pair of left and right hinge pillars 2 extending in the vertical direction of the vehicle at positions separated by predetermined intervals in the vehicle width direction, and an upper portion of the hinge pillars 2. A cowl box 3 connected in the vehicle width direction, a dash panel 4 arranged between the hinge pillars 2, a dash cross member 5 connecting the lower part of the hinge pillar 2 in the vehicle width direction, and a dash cross member 5 above the vehicle. It includes a reinforcing member 6 arranged and a pair of left and right torque boxes 7 arranged below the vehicle of the dash cross member 5.

Further, as shown in FIGS. 1 to 3, the front vehicle body of the vehicle 1 has a pair of left and right apron reinforcements 8 extending from the upper portion of the hinge pillar 2 to the front of the vehicle, and the front end of the apron reinforcement 8 in the vehicle width direction. It is provided with a shroud upper 9 connected to the apron, and a pair of left and right front side frames 10 extending inside the apron reinforcement 8 in the vehicle width direction and extending below the vehicle in the vehicle front-rear direction.

In addition, as shown in FIGS. 1 and 3, the front vehicle body of the vehicle 1 includes a pair of left and right shroud members 11 for connecting the shroud upper 9 and the front end of the front side frame 10 in the vertical direction of the vehicle, and a hinge pillar 2. A pair of left and right suspension housings 12 arranged between the shroud members 11 and a tower bar 13 connecting the left and right suspension housings 12, and a subframe 14 arranged below the vehicle of the front side frame 10 are provided. ing.

Then, as shown in FIGS. 1 and 3, the front vehicle body of the vehicle 1 is connected to a pair of left and right fronts connecting the front side frame 10 and the subframe 14 at substantially the same position in the vehicle front-rear direction as the shroud member 11. A member 15 and a rear connecting member 16 connecting the front side frame 10 and the subframe 14 at a position substantially the same as the suspension housing 12 in the vehicle front-rear direction are provided.

Subsequently, to elaborate on each component constituting the front vehicle body of the vehicle 1 described above, the hinge pillar 2 constitutes the lower part of the vehicle interior and is closed extending in the vehicle front-rear direction as shown in FIGS. 1 and 3. The front end of the side sill 17 which is a cross-section member and the front end of the front pillar 18 which is a closed cross-section member extending above the vehicle in the side sill 17 in the front-rear direction of the vehicle are connected in the vertical direction of the vehicle.

Although detailed illustration is omitted, the hinge pillar 2 is a closed cross-section member having a closed cross section in a horizontal cross section along the vehicle front-rear direction, and has a hinge pillar inner arranged inside in the vehicle width direction. It is composed of a hinge pillar outer arranged on the outside in the vehicle width direction with respect to the hinge pillar inner.

Further, as shown in FIG. 2, the cowl box 3 is formed in a substantially arcuate shape in a plan view in which the substantially center in the vehicle width direction protrudes toward the front of the vehicle in a plan view. As shown in FIG. 5, the cowl box 3 is a closed cross-sectional member having a closed cross-sectional shape in a vertical cross section along the vehicle front-rear direction, and includes a cowl lower 31 and a cowl lower 31 arranged below the vehicle. It is composed of a cowl upper 32 that covers from above the vehicle.

Further, as shown in FIGS. 1, 4, and 5, the dash panel 4 is a panel member forming the front wall of the vehicle interior, and both ends in the vehicle width direction are joined to the left and right hinge pillars 2, respectively. , The upper end is joined to the cowl lower 31 of the cowl box 3.

Further, as shown in FIG. 4, the lower end edge of the dash panel 4 near the center in the vehicle width direction is upward in the vehicle so as to be along the floor tunnel (not shown) extending in the vehicle interior in the front-rear direction of the vehicle in the front view. It is formed in a substantially inverted U-shaped protruding shape. The lower end edge formed in a shape along the floor tunnel is referred to as a tunnel corresponding portion 4a.

Further, as shown in FIG. 4, the dash cross member 5 connects the lower portions of the left and right hinge pillars 2 in the vehicle width direction along the lower end edge of the dash panel 4. Although detailed illustration is omitted, the dash cross member 5 is formed in a substantially hat-shaped cross section protruding forward of the vehicle so as to form a closed cross section with the dash panel 4 in a vertical cross section along the vehicle front-rear direction. There is.

More specifically, as shown in FIG. 4, the dash cross member 5 has a front-view substantially gate-shaped gate-shaped portion 5a projecting upward along the tunnel-corresponding portion 4a of the dash panel 4 in front view. And a horizontally extending portion 5b extending outward in the vehicle width direction from the lower end of the gate-shaped portion 5a toward the left and right hinge pillars 2, respectively.

Further, as shown in FIG. 4, the reinforcing member 6 is arranged as a reinforcing member for reinforcing the dash panel 4 above the vehicle of the portal-shaped portion 5a of the dash cross member 5 in the front view. The upper end of the reinforcing member 6 is joined to the cowl box 3, and the lower end is joined to the portal-shaped portion 5a of the dash cross member 5.

More specifically, as shown in FIG. 4, the reinforcing member 6 is a substantially flat plate-shaped flat plate covering a portion surrounded by a front-viewing gate-shaped reinforcing member main body 6a having an opening at the lower part of the vehicle and a portion surrounded by the reinforcing member main body 6a. It is integrally formed with the portion 6b.

As shown in FIG. 5, the reinforcing member main body 6a has a cross-sectional shape protruding forward of the vehicle so as to form a closed cross section with the cowl lower 31 of the cowl box 3 and the dash panel 4 in a vertical cross section along the vehicle front-rear direction. Is formed in.
As shown in FIGS. 4 and 5, two ribs 6c projecting forward of the vehicle and extending in the vehicle width direction are formed on the flat plate portion 6b at predetermined intervals in the vehicle vertical direction.

Further, as shown in FIGS. 1 and 4, the torque box 7 is adjacent to the lower part of the horizontal extension portion 5b of the dash cross member 5 below the vehicle, and the side sill 17 and the front side frame 10 are connected in the vehicle width direction. ing. Although detailed illustration is omitted, the torque box 7 is a substantially box having a closed cross section in a vertical cross section along the vehicle front-rear direction with the dash panel 4 adjacent to the side sill 17 on the inner side in the vehicle width direction. It is formed in a shape.

Further, as shown in FIG. 2, the apron reinforcement 8 is a closed cross-sectional member formed in a shape extending substantially linearly in the front-rear direction of the vehicle in a plan view, and the front end is the vehicle width with respect to the rear end. It is arranged so as to be located inside the direction.

As shown in FIG. 2, the apron reinforcement 8 has a top portion of the inner edge in the vehicle width direction at a position substantially the same as the damper mounting portion 121a of the suspension housing 12, which will be described later, in the vehicle front-rear direction. As such, it is formed in a substantially arc shape in a plan view protruding inward in the vehicle width direction.

More specifically, as shown in FIGS. 1 and 3, the apron reinforcement 8 has an apron rain rear portion 81 having a rear end joined to the upper portion of the hinge pillar 2 and an apron rain front portion joined to the apron rain rear portion 81. It is composed of 82.

As shown in FIGS. 2 and 3, the apron rain rear portion 81 is formed with a length in the vehicle front-rear direction in which the front end is located slightly behind the rear end of the suspension housing 12, which will be described later. As shown in FIG. 5, the apron rain rear portion 81 is formed so that the cross-sectional shape in the vertical cross section along the vehicle width direction is a closed cross-sectional shape.

As shown in FIG. 3, the apron rain front portion 82 is formed in a shape in which the lower surface is curved so as to form a wheel arch with respect to a substantially horizontal upper surface in a side view. As shown in FIGS. 6 and 7, the apron rain upper portion 82 has a closed cross-sectional shape having a substantially rectangular cross-sectional shape in a vertical cross section along the vehicle width direction, and the apron rain upper is arranged above the vehicle. It is composed of an apron rain lower 822 arranged below the vehicle with respect to the apron rain upper 821.

Specifically, as shown in FIG. 6, the apron rain upper 821 has a cross-sectional shape in a vertical cross section along the vehicle width direction, which is formed in a substantially hat-like cross section protruding upward from the vehicle.
On the other hand, as shown in FIGS. 6 and 7, the apron rain lower 822 has a cross-sectional shape in a vertical cross section along the vehicle width direction, which is formed in a substantially hat-like cross section protruding downward from the vehicle.

As shown in FIG. 7, the apron rain lower 822 includes an apron rain component 124 integrally formed with the suspension housing 12, and a steel lower panel 823 formed in a shape continuous with the apron rain component 124. It is integrally configured by joining in this order from the rear of the vehicle. The apron rain component 124 will be described in detail later.

Further, as shown in FIG. 8, the shroud upper 9 is a closed cross-sectional member having a closed cross section in a vertical cross section along the vehicle front-rear direction, and a shroud drawer panel 91 having a substantially hat-shaped cross section protruding downward from the vehicle. And a shroud upper panel 92 having a substantially hat-shaped cross section protruding above the vehicle.

Further, as shown in FIGS. 3 and 9, the front side frame 10 is a closed cross-section member having a length in the vehicle front-rear direction from the lower part of the dash panel 4 to the front end of the apron reinforcement 8.
As shown in FIG. 9, the rear end of the front side frame 10 is joined to a range from the front end of the floor frame 19 having a closed cross section extending in the front-rear direction of the vehicle with the floor panel (not shown) to the dash cross member 5. Has been done. Further, the inner side of the torque box 7 in the vehicle width direction is joined to the outer side surface of the front side frame 10 in the vehicle width direction.

More specifically, as shown in FIGS. 6, 10, and 11, the front side frame 10 has a closed cross-sectional shape having a substantially rectangular cross-sectional shape in a vertical cross section along the vehicle width direction, and is in the vehicle width direction. It is composed of a side frame inner 101 arranged inside and a side frame outer 102 arranged outside in the vehicle width direction with respect to the side frame inner 101.

As shown in FIG. 10, the side frame inner 101 is formed in a shape in which a substantially hat-shaped open cross section protruding inward in the vehicle width direction is extended in the vehicle front-rear direction.
On the other hand, as shown in FIG. 11, the side frame outer 102 has a substantially hat-shaped open cross section protruding outward in the vehicle width direction with a length in the vehicle width direction longer than the length in the vehicle width direction in the side frame inner 101. It is formed in a shape extending in the front-rear direction of the vehicle.

As shown in FIG. 1, such a front side frame 10 is joined to a substantially flat plate-shaped plate member 103 to which a crash can (not shown) is connected while closing the front end opening.

Further, inside the front side frame 10, as shown in FIGS. 12 and 13, the first node member 104 and the second node are divided so as to partition the internal space at positions separated by predetermined intervals in the vehicle front-rear direction. The member 105 and the third node member 106 are arranged in this order from the front of the vehicle.

As shown in FIGS. 12 and 14, the first node member 104 includes a substantially flat plate-shaped flat plate portion having a predetermined thickness in the vehicle front-rear direction, and a flange portion extending in a flange shape from the edge of the flat plate portion. Is integrally formed with.

As shown in FIGS. 12 and 14, the first node member 104 is arranged at a position substantially the same as the lower end rear portion of the shroud member 11 described later in the vehicle front-rear direction, and is joined to the inner surface of the front side frame 10. Has been done. Therefore, inside the front side frame 10, a closed cross-sectional space continuous with the shroud member 11, which will be described later, is formed by the plate member 103 and the first node member 104.

As shown in FIG. 12, the second node member 105 is integrally formed by a substantially flat plate-shaped flat plate portion having a predetermined thickness in the vehicle front-rear direction and a flange portion extending in a flange shape from the edge of the flat plate portion. Has been done. The second knot member 105 is arranged at a position separated behind the vehicle by a predetermined distance from the first knot member 104.

As shown in FIG. 13, the third node member 106 is integrally formed by a substantially flat plate-shaped flat plate portion having a predetermined thickness in the vehicle front-rear direction and a flange portion extending in a flange shape from the edge of the flat plate portion. Has been done. As shown in FIG. 13, the third node member 106 has a front side frame 10 so as to connect the rear reinforcing portion 123 of the suspension housing 12 described later and the rear connecting member 16 described later in the vertical direction of the vehicle. It is joined to the inner surface.

Further, as shown in FIGS. 10, 11, and 15, the shroud member 11 is a closed cross-sectional member having a substantially rectangular cross-sectional shape in a horizontal cross section along the vehicle front-rear direction, and has a vehicle width. The inner side surface component 111 arranged inside in the direction, the outer surface component 112 arranged outside in the vehicle width direction with respect to the inner side surface component 111, and the inner side surface component 111 arranged on the vehicle front side. It is composed of the front component 113.

Specifically, as shown in FIGS. 10 and 15, the inner side surface component 111 has an inner side surface portion 111a which is an inner side surface in the vehicle width direction of the shroud member 11 and a rear surface portion 111b which is a rear surface of the shroud member 11. The front flange portion 111c extending from the front end of the inner side surface portion 111a to the outside in the vehicle width direction, the rear flange portion 111d extending from the outside in the vehicle width direction of the rear surface portion 111b to the rear of the vehicle, and the lower end of the rear surface portion 111b. It is integrally formed with the lower flange portion 111e extending from the rear to the rear of the vehicle.

As shown in FIGS. 10 and 12, the lower end of the inner side surface portion 111a is joined to the flange portion of the side frame outer 102, and the lower flange portion 111e is the upper surface of the side frame outer 102. It is joined to the first node member 104 via.

As shown in FIGS. 11 and 15, the outer side surface component 112 has a bulging portion 112a that bulges outward in the vehicle width direction from the outer side surface of the side frame outer 102 in the vehicle width direction, and a lower end of the bulging portion 112a. The rear flange portion 112b provided substantially along the edge and the rear end edge in a substantially flange shape, and the front flange portion 112c extending outward in the vehicle width direction from the front end edge of the bulging portion 112a are integrally formed.

The bulging portion 112a of the outer surface constituent portion 112 is formed to have a length in the vertical direction of the vehicle from the upper end to the side surface of the front side frame 10. Further, in the outer surface constituent portion 112, the lower portion of the rear flange portion 112b is joined to the side frame outer 102, the rear portion of the rear flange portion 112b is joined to the rear flange portion 111d of the inner side flange portion 111, and the front flange portion 112 is joined to the rear flange portion 111d. The portion 112c is joined to the front component 113.

As shown in FIGS. 10, 11, 14, and 15, the front component 113 has a substantially flat plate shape having a predetermined thickness in the vehicle front-rear direction, and has an inner surface component 111 and an outer surface component 112. It is formed in a shape that closes the opening on the front side of the vehicle, which is composed of and.

Therefore, as shown in FIGS. 14 and 15, the shroud member 11 has an inner side surface component 111 and an outer surface component 11 above the upper surface of the front side frame 10 in a horizontal cross section along the vehicle front-rear direction. A closed cross section is formed by the 112 and the front component 113, and a closed cross section is formed by the side surfaces of the outer surface component 112, the front component 113, and the front side frame 10 below the upper surface of the front side frame 10. ing.

That is, the shroud member 11 includes the plate member 103 and the first node member 104 by forming a closed cross-section portion in which the outer surface constituent portion 112 and the front surface constituent portion 113 form a closed cross section with the front side frame 10. A closed cross-section space adjacent to the closed cross-section space of the front side frame 10 partitioned by is formed.

Further, as shown in FIGS. 1 and 3, the suspension housing 12 swings freely on the upper end of the front suspension damper 20 and the upper arm 21 arranged at a desired position in front of the hinge pillar 2 and the dash panel 4. It is a high-rigidity member that supports the apron, and is erected so as to straddle the apron reinforcement 8 and the front side frame 10.

More specifically, as shown in FIGS. 3 and 16, the suspension housing 12 includes a suspension tower 121 to which the upper end of the front suspension damper 20 is attached, a front reinforcing portion 122 adjacent to the vehicle front side of the suspension tower 121, and a suspension tower 121. The rear reinforcing portion 123 adjacent to the rear side of the vehicle and the apron rain component portion 124 which is a part of the apron rain lower 822 in the above-mentioned apron reinforcement 8 are integrally formed.

As shown in FIG. 3, the lower end of the suspension housing 12 is joined to the flange portion of the side frame outer 102 in the front side frame 10. As shown in FIG. 3, the lower end of the rear reinforcing portion 123 in the suspension housing 12 is located at substantially the same position in the vehicle front-rear direction as the upper base portion 163 of the rear connecting member 16 described later, and the side frame outer 102 in the front side frame 10. It is joined to the flange part of.

As shown in FIGS. 13 and 16, the suspension tower 121 extends downward from the vehicle width direction inner side of the top plate portion having a substantially circular shape in a plan view and the inner edge of the top plate portion in the vehicle width direction. It is formed of a side surface portion that becomes a side surface. A damper mounting portion 121a having a substantially circular shape in a plan view is formed on the top plate portion of the suspension tower 121 to which the upper end of the front suspension damper 20 is mounted.

As shown in FIGS. 13 and 16, the front reinforcing portion 122 is formed as a reinforcing portion for reinforcing the front of the vehicle of the suspension tower 121. The front reinforcing portion 122 is formed in a shape in which a range extending from a position substantially the same as the top plate portion of the suspension tower 121 in the vertical direction of the vehicle to the lower portion of the suspension housing 12 is bulged inward in the vehicle width direction.

As shown in FIGS. 13 and 16, the rear reinforcing portion 123 is formed as a reinforcing portion for reinforcing the rear of the vehicle of the suspension tower 121. The rear reinforcing portion 123 is formed in a shape in which the range from the position above the vehicle above the top plate portion of the suspension tower 121 to the lower portion of the suspension housing 12 is bulged inward in the vehicle width direction.

As shown in FIGS. 7, 16, and 17, the apron rain component portion 124 integrally extends the upper ends of the suspension tower 121, the front reinforcing portion 122, and the rear reinforcing portion 123 to the outside in the vehicle width direction, and the apron. The apron rain upper 821 of the reinforcement 8 is formed in a shape having a closed cross section extending in the front-rear direction of the vehicle.

Specifically, in a state where the apron rain component 124 is joined to the lower panel 823 of the apron reinforcement 8, the cross-sectional shape in the vertical cross section along the vehicle width direction protrudes downward of the vehicle continuous with the lower panel 823. As shown in FIGS. 3, 13, and 17, the outer surface of the suspension housing 12 having such a structure, which is formed so as to have a substantially hat-shaped cross section, is connected to the front side of the upper arm 21. The front support portion 125 that swingably supports the portion and the rear support portion 126 that swingably supports the rear connecting portion of the upper arm 21 are formed at positions in the vehicle front-rear direction with the suspension tower 121 interposed therebetween. There is.

The front support portion 125 is formed in the shape of a pair of wall surfaces erected toward the outside in the vehicle width direction along both ends of the front reinforcing portion 122 in the vehicle front-rear direction.
The rear support portion 126 is formed in the shape of a pair of wall surfaces erected toward the outside in the vehicle width direction along both ends of the rear reinforcing portion 123 in the vehicle front-rear direction.

Further, as shown in FIGS. 2 and 5, the tower bar 13 connects the upper surfaces of the rear reinforcing portions 123 in the left and right suspension housings 12 via the cowl box 3.
Specifically, as shown in FIGS. 2 and 5, the tower bar 13 holds a pipe-shaped bar body 131 connecting the rear reinforcing portions 123 of the left and right suspension housings 12 and the rear end of the bar body 131. At the same time, it is composed of a holding member 132 connected to the cowl box 3.

As shown in FIGS. 2, 5, and 7, the bar main body 131 has a pair of left and right flange portions 131a connected to the rear reinforcing portion 123 of the suspension housing 12 and substantially near the center in the vehicle width direction in the cowl box 3. A pair of left and right elongated portions 131b extending substantially linearly from the flange portion 131a to the rear of the vehicle and inward in the vehicle width direction, and a connecting portion 131c connecting the rear ends of the elongated portions 131b are shown in a plan view. It is integrally formed in a V shape.

As shown in FIGS. 1, 2, and 5, the holding member 132 is formed in a shape that integrally holds the vicinity of the rear end of the left and right elongated portions 131b and the connecting portion 131c, and is reinforced. It is formed in a shape that can be joined to the upper surface of the portal-shaped portion 5a of the member 6.

As shown in FIG. 5, such a tower bar 13 has a closed cross section with the dash panel 4 and the cowl box 3 by joining the holding member 132 to the upper surface of the portal-shaped portion 5a of the reinforcing member 6. It is connected to the cowl box 3 which is a closed cross-section member via the reinforcing member 6.

Further, as shown in FIG. 18, the subframe 14 connects a pair of left and right side members 141 extending in the vehicle front-rear direction at positions spaced apart from each other in the vehicle width direction and left and right side members 141 in the vehicle width direction. The front suspension cross member 142, the central suspension cross member 143, and the rear suspension cross member 144 are formed in a substantially ladder shape in a plan view.
More specifically, as shown in FIG. 2, the side member 141 is arranged slightly inside the front side frame 10 in the vehicle width direction in a plan view.

As shown in FIG. 18, the side member 141 is a closed cross-sectional member whose cross-sectional shape in a vertical cross section along the vehicle width direction is a closed cross section having a substantially rectangular cross section, and is the length of the front side frame 10 in the vehicle front-rear direction. It is formed in a shape having substantially the same length in the front-rear direction of the vehicle.
As shown in FIG. 18, the front end and the rear end of the side member 141 are each formed in a shape bent toward the outside in the vehicle width direction.

Further, as shown in FIG. 18, the side member 141 has a front support bracket 145 that swingably supports the connecting portion on the front side of the vehicle in the lower arm 22 at a portion in front of the vehicle with respect to the rear connecting member 16 described later. The rear support bracket 146, which is joined and swingably supports the connecting portion on the rear side of the vehicle in the lower arm 22, is fastened and fixed to the portion rear of the vehicle from the rear connecting member 16.

In addition, as shown in FIGS. 9 and 18, an insertion hole (not shown) through which a fastening member 147 for fastening and fixing to the lower surface of the rear end of the front side frame 10 is inserted is provided on the upper surface of the rear end of the side member 141. An opening is formed.

As shown in FIG. 18, the front suspension cross member 142 connects the front ends of the side members 141 in the vehicle width direction. As shown in FIG. 18, the front suspension cross member 142 is a closed cross-sectional member having a closed cross section in a vertical cross section along the vehicle front-rear direction, and has a member upper having a substantially hat-shaped cross section protruding upward from the vehicle. , Consists of a substantially flat plate-shaped member lower.

As shown in FIG. 18, the central suspension cross member 143 connects the left and right side members 141 in the vehicle width direction at positions separated from the front suspension cross member 142 by a predetermined distance behind the vehicle. The central suspension cross member 143 has a rear closed cross-section portion 143a, which is a closed cross-section portion connecting the left and right side members 141 at substantially the same position in the vehicle front-rear direction as the rear reinforcing portion 123 of the suspension housing 12, and a rear closed cross-section portion 143a. It is formed in a shape having a front closed cross-section portion 143b which is a closed cross-section portion connecting the left and right side members 141 at a position separated from the front of the vehicle.

Specifically, as shown in FIG. 18, the central suspension cross member 143 has a member upper having a substantially H-shape in a plan view and a member lower having a substantially flat plate shape, which protrudes upward in the vehicle and has an opening on the outside in the vehicle width direction. A rear closed cross-section portion 143a which is a closed cross-section portion extending in the vehicle width direction on the rear side of the vehicle and a front closed cross-section portion 143b which is a closed cross-section portion extending in the vehicle width direction on the front side of the vehicle by joining in the vehicle vertical direction. Is forming.

As shown in FIG. 18, the rear suspension cross member 144 connects the rear ends of the side members 141 in the vehicle width direction. As shown in FIG. 18, the rear suspension cross member 144 is a closed cross-sectional member having a closed cross section in a vertical cross section along the vehicle front-rear direction, and is a member upper having a substantially hat-shaped cross section protruding upward from the vehicle. It is composed of a substantially flat plate-shaped member lower.

Further, as shown in FIGS. 11, 12, and 18, the pair of left and right front connecting members 15 have a substantially rectangular closed cross section extended above the vehicle and outward in the vehicle width direction, and then outward in the vehicle width direction. It is formed in an extended shape. As shown in FIG. 12, the front connecting member 15 has a lower surface of the side frame outer 102 in the front side frame 10 and a front suspension cross member of the subframe 14 at a position substantially the same as the lower end of the shroud member 11 in the vehicle front-rear direction. The 142 is connected in the vertical direction of the vehicle.

More specifically, as shown in FIGS. 11, 12, and 18, the front connecting member 15 has a closed cross-sectional shape in a vertical cross section along the vehicle front-rear direction, and the lower portion of the vehicle is a closed cross-sectional shape. A member upper having a substantially gate-shaped cross section with an opening and a member lower having a substantially gate-shaped cross section with an opening above the vehicle are joined in the vertical direction of the vehicle.

Further, as shown in FIGS. 12 and 18, the front connecting member 15 is integrally provided with a fastening member 151 for fastening and fixing to the front side frame 10 on the upper surface on the outer side in the vehicle width direction.

Then, as shown in FIG. 12, the front connecting member 15 has the upper surface on the outer side in the vehicle width direction between the plate member 103 in the vehicle front-rear direction and the first node member 104 in the vehicle vertical direction with the shroud member 11. It is fastened and fixed to the lower surface of the side frame outer 102 so as to face each other via a fastening member 151.

Further, as shown in FIGS. 3 and 13, the rear connecting member 16 is located at a position substantially the same as the rear reinforcing portion 123 of the suspension housing 12 in the vehicle front-rear direction, with the lower surface of the side frame outer 102 in the front side frame 10 and the sub. The side member 141 of the frame 14 is connected to the vehicle in the vertical direction.

In other words, as shown in FIG. 13, the rear connecting member 16 has the side frame outer 102 in the front side frame 10 at a position substantially the same as the third node member 106 provided inside the front side frame 10 in the vehicle front-rear direction. The lower surface of the subframe 14 and the side member 141 of the subframe 14 are connected in the vertical direction of the vehicle.

As shown in FIG. 18, the rear connecting member 16 is a high-rigidity member made of die-cast aluminum, and is housed and held by a lower base portion 161 fastened and fixed to a side member 141 and an engine mount bush (not shown). The accommodation holding portion 162 is integrally formed with the upper base portion 163 provided with the fastening member 164 for fastening and fixing to the front side frame 10.

As shown in FIG. 18, the accommodation holding portion 162 is formed in a substantially cylindrical shape extending from the lower base portion 161 toward the upper side of the vehicle and inward in the vehicle width direction. Although detailed illustration is omitted, the accommodation holding portion 162 is configured to accommodate an engine mount bush that elastically supports an engine (not shown).

As shown in FIG. 13, the upper base portion 163 has a vehicle width of the accommodation holding portion 162 so as to be located at a position substantially the same as the third node member 106 in the vehicle front-rear direction in a state of being fastened and fixed to the subframe 14. It is integrally formed on the outside of the direction.

As shown in FIGS. 19 to 22, a plurality of annular body skeletons having a substantially annular shape are formed on the front vehicle body of the vehicle 1 having the above-described configuration by connecting the members forming the vehicle body skeleton. At the same time as being formed, a plurality of annular car body skeletons are connected to each other to form a three-dimensionally substantially annular three-dimensional annular car body skeleton.

Specifically, as shown in FIGS. 19 to 21, the front vehicle body of the vehicle 1 passes through the first annular vehicle body skeleton W1 which is substantially annular through the shroud upper 9 and the suspension housing 12 when viewed from the front. A second annular body skeleton W2 that is substantially annular, a third annular body skeleton W3 that is substantially annular through the dash cross member 5, a fourth annular body skeleton that is substantially annular through the dash cross member 5, and the subframe 14. An annular body skeleton W4 and a fifth annular body skeleton W5 which is substantially annular through the torque box 7 and the subframe 14 are formed.

Further, as shown in FIG. 22, the front vehicle body of the vehicle 1 has a sixth annular vehicle body skeleton W6 which is substantially annular through the apron reinforcement 8 and a substantially annular shape through the subframe 14 in the side view. A seventh annular vehicle body skeleton W7 is formed.

The front body of the vehicle 1 has a first annular body skeleton W1, a second annular body skeleton W2, a third annular body skeleton W3, a fourth annular body skeleton W4, and a fifth annular body skeleton, which are substantially annular in front view. Left and right apron reinforcements 8, left and right front side frames 10, and left and right sides of the subframe 14 so that W5 is connected to each other via the sixth annular body skeleton W6 and the seventh annular body skeleton W7. It is concatenated by member 141.

More specifically, as shown in FIG. 19, the first annular vehicle body skeleton W1, which is substantially annular in front view, is surrounded by a shroud upper 9 which is a closed cross-section member, a plate member 103, and a first node member 104. The front side frame 10 which is a closed cross-section member, the left and right shroud members 11 which are closed cross-section members, the front suspension cross member 142 of the subframe 14 which is a closed cross-section member, and the left and right front connecting members 15 which are closed cross-section members. It is composed of and.

Further, as shown in FIG. 20, the second annular car body frame W2 having a substantially annular shape in front view is a left and right front side frame 10 which is a closed cross-sectional member provided with a third node member 106 and a high rigidity member. The rear reinforcing portions 123 of the left and right suspension housings 12, the tower bar 13 which is a closed cross-section member, the rear closed cross-section portion 143a of the central suspension cross member 143 of the subframe 14 which is a closed cross-section member, and the left and right which are high-rigidity members. It is composed of the rear connecting member 16 of the above.

Further, as shown in FIG. 21, the third annular car body skeleton W3, which has a substantially annular shape in the front view, is composed of the left and right hinge pillars 2 which are closed cross-section members, the cowl box 3 which is a closed cross-section member, and the dash panel 4. It is composed of a dash cross member 5 having a closed cross section extending in the width direction.

Further, as shown in FIG. 21, the fourth annular vehicle body skeleton W4, which is substantially annular in front view, is closed by the left and right hinge pillars 2 which are closed cross-section members, the cowl box 3 which is a closed cross-section member, and the dash panel 4. The horizontal extension portion 5b of the dash cross member 5 forming a cross section, the left and right front side frames 10 which are closed cross-section members, the side members 141 of the subframe 14 which is a closed cross-section member, and the rear suspension cross member 144. It is configured.

Further, as shown in FIG. 21, the fifth annular vehicle body skeleton W5, which is substantially annular in front view, is closed by the left and right hinge pillars 2 which are closed cross-section members, the cowl box 3 which is a closed cross-section member, and the dash panel 4. It is composed of a torque box 7 having a cross section, left and right front side frames 10 which are closed cross-section members, side members 141 of a subframe 14 which is a closed cross-section member, and rear suspension cross members 144.

Further, as shown in FIG. 22, the sixth annular car body skeleton W6 having a substantially annular side view has a hinge pillar 2 which is a closed cross-section member, a dash cross member 5 which has a closed cross section with the dash panel 4, and a closed cross-section member. The apron reinforcement 8 is composed of a front side frame 10 which is a closed cross-section member, and a shroud member 11 which is a closed cross-section member.

Further, as shown in FIG. 22, the seventh annular vehicle body skeleton W7, which has a substantially annular shape in a side view, has a front side frame 10 which is a closed cross-section member, side members 141 of a subframe 14 which is a closed cross-section member, and a closed cross section. It is composed of a front connecting member 15 which is a member.

As described above, the front vehicle body of the vehicle 1 has a first annular vehicle body skeleton W1, a second annular vehicle body skeleton W2, and a third annular vehicle body skeleton, which are formed at positions spaced apart from each other in the front-rear direction of the vehicle and are substantially annular in front view. W3, the fourth annular body skeleton W4, and the fifth annular body skeleton W5 are connected in the vehicle front-rear direction by the left and right sixth annular body skeletons W6 and the left and right seventh annular body skeletons W7, which form a substantially annular side view. There is.

Therefore, the front body of the vehicle 1 has a first annular body skeleton W1, a second annular body skeleton W2, a third annular body skeleton W3, a fourth annular body skeleton W4, and a fifth annular body skeleton, which are substantially annular in front view. The skeleton W5, the sixth annular car body skeleton W6 having a substantially annular side view, and the seventh annular car body skeleton W7 form a substantially cage-shaped three-dimensional annular car body skeleton.

As described above, a pair of left and right hinge pillars 2 arranged at positions spaced apart from each other in the vehicle width direction of the vehicle 1 and a pair of left and right apron rains which are closed cross-sectional members extending from the upper portion of the hinge pillars 2 in the vehicle front-rear direction. The forcement 8 and the pair of left and right front side frames 10 which are closed cross-section members extending in the front-rear direction of the vehicle below the apron reinforcement 8, and the front suspension at a desired position separated from the dash panel 4 in front of the vehicle by a predetermined distance. Along with supporting the upper end of the damper 20, a pair of left and right suspension housings 12 erected over the apron reinforcement 8 and the front side frame 10, and the lower arm 22 are arranged below the vehicle of the front side frame 10. The front body structure of the vehicle 1 provided with the subframe 14 that swingably supports the apron reinforcement 8 is a shroud upper 9 and a shroud upper 9 which are closed cross-sectional members connecting the front ends of the apron reinforcement 8 in the vehicle width direction. , And a pair of left and right shroud members 11 which are closed cross-section members connecting the front ends of the front side frame 10, and the subframe 14 is substantially the same as the pair of left and right side members 141 extending in the front-rear direction of the vehicle. The front suspension cross member 142, which is a closed cross-section member connecting the left and right side members 141 at the position in the vehicle front-rear direction, and the closed cross section connecting the left and right side members 141 at the position substantially the same as the suspension housing 12 in the vehicle front-rear direction. The first annular body frame W1 which is provided with the central suspension cross member 143 which is a member and has a substantially annular shape in front view through the shroud member 11 and the front suspension cross member 142 of the subframe 14, and the vicinity of the suspension housing 12 and the sub. The first annular vehicle body is provided with a second annular body frame W2 that is substantially annular in front view through the central suspension cross member 143 of the frame 14, and a third annular body frame W3 that is substantially annular in front view through the hinge pillar 2. The skeleton W1, the second annular body skeleton W2, and the third annular body skeleton W3 were connected to each other in the vehicle front-rear direction by the apron suspension 8, the front side frame 10, and the side member 141 of the subframe 14. As a result, even when the suspension housing 12 is arranged at a position separated from the front of the vehicle with respect to the dash panel 4, the vehicle body rigidity with respect to the load acting on the suspension housing 12 and the load acting on the subframe 14 is improved. To do can.

Specifically, the first annular body skeleton W1, the second annular body skeleton W2, and the third annular body skeleton W3 are formed by the apron reinforcement 8, the front side frame 10, and the side member 141 of the subframe 14. By being connected, the front vehicle body structure of the vehicle 1 can form a three-dimensional annular vehicle body skeleton that is three-dimensionally substantially annular.

As a result, the front body structure of the vehicle 1 can support the left and right suspension housings 12 with a three-dimensional annular body frame, so that the suspension housing 12 is loaded in the vertical direction of the vehicle via the front suspension damper 20. When a load in the vehicle width direction or a rotational moment is applied, it is possible to suppress bending deformation that occurs in the front vehicle body.

Therefore, the front vehicle body structure of the vehicle 1 constitutes a vehicle body frame having high rigidity against the load in the vehicle vertical direction, the load in the vehicle width direction, and the rotational moment acting on the suspension housing 12 via the front suspension damper 20. can do.

In addition, the front suspension cross member 142 constitutes the first annular body frame W1, the central suspension cross member 143 constitutes the second annular body frame W2, and the side member 141 is connected to the third annular body frame W3. Therefore, the front body structure of the vehicle 1 can improve the support rigidity of the subframe 14, and the load applied to the subframe 14 via the lower arm 22 is applied to the first annular body skeleton W1, the second annular body skeleton W2, and the like. It can be efficiently distributed and transmitted to the third annular vehicle body skeleton W3, the apron reinforcement 8, and the front side frame 10.

Therefore, the front body structure of the vehicle 1 has a load acting on the suspension housing 12 and a subframe 14 even when the suspension housing 12 is arranged at a position separated from the dash panel 4 in front of the vehicle. It is possible to improve the rigidity of the vehicle body against the load acting on the housing.

Further, since the second annular body skeleton W2 is configured on the rear side of the suspension housing 12, the front vehicle body structure of the vehicle 1 brings the second annular body skeleton W2 closer to the third annular body skeleton W3. Can be configured. Therefore, the front body structure of the vehicle 1 can efficiently transmit the load acting on the second annular body frame W2 to the vehicle body behind the vehicle than the third annular body frame W3 and the third annular body frame W3. As a result, the front vehicle body structure of the vehicle 1 acts on the load acting on the suspension housing 12 and the subframe 14 as compared with the case where the second annular vehicle body skeleton W2 is configured on the vehicle front side of the suspension housing 12. The rigidity of the vehicle body against a load can be stably improved.

Further, the third annular body frame W3 includes a cowl box 3 which is a closed cross-sectional member connecting the upper portion of the hinge pillar 2 in the vehicle width direction, and the second annular body frame W2 is near the center of the cowl box 3 in the vehicle width direction. By providing the tower bar 13 that connects the left and right suspension housings 12 via the cowl box 3, the front body structure of the vehicle 1 is the cowl box 3, the left and right apron reinforcement 8, and the tower bar 13. Two planar view triangles can be formed along the vehicle width direction. That is, the front body structure of the vehicle 1 is a cowl box 3, left and right apron reinforcements 8, and a tower bar 13, and a truss structure can be formed at the rear of the front body.

At this time, since the tower bar 13 constituting the second annular vehicle body skeleton W2 is connected to the cowl box 3 constituting the third annular vehicle body skeleton W3, the front vehicle body structure of the vehicle 1 is the third annular vehicle body skeleton. By the cooperation between W3 and the second annular vehicle body skeleton W2, the rigidity of the three-dimensional annular vehicle body skeleton that is three-dimensionally substantially annular can be more reliably improved.

Further, since the tower bar 13 is formed in a substantially C-shape in a wide plan view in front of the vehicle, the front vehicle body structure of the vehicle 1 is between the left and right apron reinforcements 8 and in the plan view, and the tower bar. A large opening space can be formed in front of the vehicle 13 without impairing the rigidity of the vehicle body as compared with the case where the left and right suspension housings 12 are connected in the vehicle width direction.

Therefore, the front vehicle body structure of the vehicle 1 secures a space for arranging the engine and the like arranged on the front vehicle body, and improves the vehicle body rigidity with respect to the load acting on the suspension housing 12 and the load acting on the subframe 14. Can be compatible with each other.

In the correspondence between the configuration of the present invention and the above-described embodiment,
The suspension arm of the present invention corresponds to the lower arm 22 of the embodiment.
Similarly below
The first suspension cross member corresponds to the front suspension cross member 142,
The second suspension cross member corresponds to the central suspension cross member 143,
The suspension housing connecting member corresponds to the tower bar 13, but
The present invention is not limited to the configuration of the above-described embodiment, and many embodiments can be obtained.

For example, in the above-described embodiment, the shroud member 11 is joined to the outer side surface and the upper surface of the front side frame 10 in the vehicle width direction, but the present invention is not limited to this, and the front side frame 10 is not limited to the vehicle width direction. It may be a shroud member joined to both side surfaces and the upper surface of the above.

Further, the rear end of the tower bar 13 is connected to the cowl box 3, but the present invention is not limited to this. The rear end of the tower bar 13 may be connected to a dash cross member having a closed cross section with the panel 4.

Further, the rear end of the tower bar 13 is connected to the cowl box 3 via the reinforcing member 6, but the present invention is not limited to this, and the rear end of the tower bar 13 is directly joined to the cowl box 3. It may be configured as a cowling bar.

Further, the left and right elongated portions 131b of the bar body 131 of the tower bar 13 are connected to the cowl box 3 via the connecting portion 131c and the holding member 132, but the present invention is not limited to this. As a pair of left and right elongated connecting members composed of the portion 131a and the elongated portion 131b, the rear ends of the left and right elongated connecting members configured as separate bodies may be connected to the cowl box 3. ..

Further, the rear connecting member 16 is provided with an accommodation holding portion 162 for accommodating and holding the engine mount bush inside, but the present invention is not limited to this, and the mount is integrally connected with a mounting portion for mounting and fixing the engine mount bush on the upper surface. It may be a member.

Further, the front reinforcing portion 122 and the rear reinforcing portion 123 of the suspension housing 12 are reinforced portions having a shape that bulges inward in the vehicle width direction, but the present invention is not limited to this, and the suspension housing 12 extends in the vertical direction of the vehicle and in the vehicle width direction. It may be a reinforcing portion composed of a plurality of ribs erected inward.

Further, the suspension housing 12 may be a suspension housing made of die-cast aluminum or a suspension housing formed by press-molding an iron steel plate. In the case of a suspension housing formed by press-molding an iron steel plate, the front reinforcing portion and the rear reinforcing portion of the suspension housing are composed of an open cross-section member having a closed cross section extending in the vertical direction of the vehicle with the suspension tower.

Further, the internal space of the front side frame 10 between the suspension housing 12 and the rear connecting member 16 is provided with one third node member 106, but the present invention is not limited to this, and the suspension housing 12 and the rear are not limited to this. In the internal space of the front side frame 10 between the connecting member 16 and the vehicle, two knot members may be arranged at predetermined intervals in the front-rear direction of the vehicle.

Further, a third annular body skeleton connected to the first annular body skeleton W1 and the second annular body skeleton W2 via the apron reinforcement 8, the front side frame 10, and the side members 141 of the subframe 14. Although described as the annular body skeleton W3, the present invention is not limited to this, and the annular body skeleton connected to the first annular body skeleton W1 and the second annular body skeleton W2 is referred to as the fourth annular body skeleton W4 or the fifth annular body. It may be the skeleton W5. Alternatively, the annular car body skeleton connected to the first annular car body skeleton W1 and the second annular car body skeleton W2 may be the third annular car body skeleton W3, the fourth annular car body skeleton W4, and the fifth annular car body skeleton W5.

1 ... Vehicle 2 ... Hinge pillar 3 ... Cowl box 4 ... Dash panel 8 ... Apron reinforcement 9 ... Shroud upper 10 ... Front side frame 11 ... Shroud member 12 ... Suspension housing 13 ... Tower bar 14 ... Subframe 20 ... Front suspension damper 22 ... Lower arm 141 ... Side member 142 ... Front suspension cross member 143 ... Central suspension cross member W1 ... First annular body skeleton W2 ... Second annular body skeleton W3 ... Third annular body skeleton

Claims (3)

A pair of left and right hinge pillars arranged at positions separated by a predetermined distance in the vehicle width direction,
A pair of left and right apron reinforcements, which are closed cross-section members extending from the upper part of the hinge pillar in the front-rear direction of the vehicle,
A pair of left and right front side frames, which are closed cross-section members extending in the front-rear direction of the vehicle below the apron reinforcement,
A pair of left and right suspension housings erected across the apron reinforcement and the front side frame while supporting the upper end of the front suspension damper at a desired position separated from the dash panel in front of the vehicle at a predetermined position.
A front body structure of a vehicle, which is arranged below the front side frame of the vehicle and includes a subframe that swingably supports the suspension arm.
A shroud upper, which is a closed cross-section member that connects the front end of the apron reinforcement in the vehicle width direction,
The shroud upper is provided with a pair of left and right shroud members which are closed cross-section members connecting the front ends of the front side frame.
The subframe
A pair of left and right side members extending in the front-rear direction of the vehicle,
A first suspension cross member, which is a closed cross-section member connecting the left and right side members, at a position substantially the same as the shroud member in the vehicle front-rear direction.
A second suspension cross member, which is a closed cross-section member that connects the left and right side members, is provided at a position substantially the same as the suspension housing in the vehicle front-rear direction.
A first annular vehicle body skeleton that is substantially annular in front view through the shroud member and the first suspension cross member of the subframe.
A second annular vehicle body skeleton that is substantially annular in front view through the vicinity of the suspension housing and the second suspension cross member of the subframe.
It is equipped with a third annular car body skeleton that is substantially annular in front view through the hinge pillar.
The first annular car body skeleton, the second annular car body skeleton, and the third annular car body skeleton
A front vehicle body structure of a vehicle in which the apron reinforcement, the front side frame, and the side members of the subframe are connected in the front-rear direction of the vehicle. The second annular car body skeleton
The vehicle front body structure according to claim 1, which is configured on the vehicle rear side of the suspension housing. The third annular car body skeleton
A cowl box, which is a closed cross-section member that connects the upper part of the hinge pillar in the vehicle width direction, is provided.
The second annular car body skeleton
The front body structure of the vehicle according to claim 1 or 2, further comprising a suspension housing connecting member for connecting the left and right suspension housings via substantially the center of the cowl box in the vehicle width direction.

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